Air-gun.



I 7 I x244 D. J. RIBGER. AIR GUN; APPLIOATION FILED 1120.23, 1907.

Patented July 19, 1910.

lgzyflepjyeg M770??? far:

UNITED STATES PATENT OFFICE.

m ,BIEGER, or CHICAGO, ILLINOIS.

Patented July 19, 1910.

AIR-GUN.

964,810, Specification of Letters Iatent.

Application filed December 23, 1907. Serial N 0. 407,864.

To all whom it may concern:

Be it known that I, DAVID J RIEGER' a citizen of the United States,'residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Air-Guns, of which the folowing is a description.

My invention relates to a toy for projecting small pieces, or charges, of suitable material by compressed air.

The object of my invention is to produce a simple and durable device of the kind described, free from springs or other complicated mechanism liable to derangement or to injure the operator. j

To this end my invention consists in the novel construction, arrangement, and combination of parts, herein shown and described, and more particularly pointed out in the claims.

In the accompanying drawings wherein like or similar reference characters indicate like or corresponding parts: Figure 1, is a side elevation of my device partly in section. Fig. 2, is a View similar to Fig. 1, but showing the parts in operation. Fig. 3 isa vertical longitudinal section of a slightly modified form of barrel for my device. Fig. 4, is a view similar to Fig. another slight modification.

In the preferred form shown in the drawings my device consists essentially of two parts, a barrel and a plunger or handle for operating the same. In the form shown, in Figs. 1 and 2, the barrel consists of a tapering tubular member 1, with its rear end slightly enlarged as at 2 and adapted to serve as a die or cutter, for forming the charges or plugs for my device. The oppo- Site end of the member 1 is prefera ly slightly contracted as at 3, so as to check the charge at this oint and prevent its free passage through t e discharge end of the arre The plunger or handle consists of a part 4:, adapted to loosely fit within the barrel, but preferably not of suflicient length to extend entirely therethrough, a stop or shoulder 5 is provided upon the plunger at the end of the part 4 to enga e the flared end of the barrel and control t e position of the extremity of the lplunger relative to the dis charge end of t e barrel when the shoulder is in contact with the barrel. The grip 6, may be curved, as shown, or formed in any 3, but showing other desired manner for conveniently grasping the same to operate In device.

n operation any suitablis material, preferably comparatively thin slices of vegetables, such as potatoes, turnips, apples or the like are furnished to form the plugs or charges. The end 2, of the barrel of my device is forced through a slice of the above described material thus cutting a portion or charge 7, from the slice slightly larger in diameter than the bore of the barrel and at the same time'forcing the charge so formed into position in the rear end of the barrel. The end of the plunger is then pressed against the charge 7 andthe same is forced through the barrel to the opposite end thereof. The part 4, of the plunger is preferablyof just sufficient length to bring the outer face of the charge flush with the discharge end of the barrel. The plunger is then again withdrawn and the barrel operated as before to form, and place, a second charge 8 in the receiving end of the barrel, if now the plunger is again operated as above described, it is obvious that the charge 8 will be forced along the barrel operating as a piston to compress the air between the charges 7 and 8; the charge 7 being pre vented from readily escaping from the barrel by'the contracted ortion 3. When the pressure between the c iarges is sufiicient to overcome the resistance of the contracted portion 3 upon the charge 7, the charge will obviously be released with considerable force, depending upon the pressure in the barrel when the charge is released, while the charge 8 will be forced along the barrel until the shoulder 5 engages the end of the barrel and positions the charge 8 in the end of the barrel in the place previously occupied by the charge 7.

After the first charge or plugs has been expelled it is obvious that each succeeding .charge operates as a piston to discharge the charge previously positioned in thebarrel. The tapering form of the barrel tends to increase the pressure between the charge and the barrel as the pressure of the air imprisoned between the char es increases, thus reducing any tendency to eakage about the charge as the same is operated. In the form shown in Fig. 3 the walls of the barrel are substantially parallel with a contracted part at one end, as above described. In this form the cutting edge at the opposite end of the exterior of the barrel.

In Fig. 4, the walls of the barrel are substantially parallel and the opposite ends are formed as shown in Figs. 1 and 2. The plunger adapted for use with either the form shown in Figs. 3 or 4 is preferably substantially the same as that shown in Figs. 1 and 2. .e

Having thusdescribed my improvement, it is obvious that various immaterial modifications may be made in my device without departing from the spirit of my invention, hence I do not wish to be understood as limiting myself to the exact form and construction shown.

What I claim as new and desire to'secure by Letters Patent is:

1. In a device of the kind described, an air r gun barrel provided with a flared portion at one end and with a contracted portion at its opposite end, the Walls of the barrel at the flared end being sharpened to operate as a die to form a plug slightly larger than the bore of said barrel, in combination with a plunger fitting in said barrel and adapted to force the plug thereinto.

2. In a device of the kind described, a tapering air gun barrel provided with a contracted portion at its small end and with the wall of the barrel at the large end sharpened to form a cutting edge at the exterior of the barrel, to operate as a die to form a plug slightly larger than the bore of said barrel.

3. In a. device of the kind described, a tapering air gun barrel provided with a flared portion at its large end and a contracted portion at its small end and with the walls of the barrel at the flared end sharpened to operate as a die, to form a plug slightly larger than the bore of the large end of said barrel. y

In testimony whereof, I have hereunto signed my name in the presence of two sub scribing witnesses.

v DAVID J. RIEGER.

\Vitnesses Bcn'roN U. HILLS, CHARLES 1. Conn. 

